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DIA [1.3K]
4 years ago
13

An ameba is a single-celled, heterotrophic organism. In order to meet its energy needs, it relies directly on the interaction of

which cell structures?
Biology
2 answers:
Bezzdna [24]4 years ago
8 0
I mean yes send picture of the question
Serjik [45]4 years ago
4 0

Answer: Cell membrane and mitochondria.

Explanation:

The cell membrane and mitochondria helps the amoeba to gain energy. The food is engulfed inside the amoeba by the false foot.

The cell membrane folds itself and and traps the food particle which gets inside the cell.

The food is converted into ATP inside the mitochondria which provides energy to amoeba for the proper functioning.

hence, the correct answer is Cell membrane and mitochondria.

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A cell with 22 chromosomes undergoes meiosis. How many nuclei result from this process? Need ASAP
qaws [65]

Answer:

The overall process of meiosis produces four daughter cells from one single parent cell

Explanation:

Germ cells contain a complete set of 46 chromosomes (23 maternal chromosomes and 23 paternal chromosomes). By the end of meiosis, the resulting reproductive cells, or gametes, each have 23 genetically unique chromosomes.

8 0
2 years ago
Which diuretic remains effective when creatinine clearance drops below 25 ml/min?
OLga [1]
Loop Diuretics

These are diuretics that exerts effect on the loop of Henle.  They are primarily used in heart failure, hypertension and edema. In contrast with Thiazides, loop diuretics are more  effective in patients with abnormal kidney function. Loop diuretics inhibit the magnesium and calcium reabsorption in the thick ascending limb of Henle. Loop diuretics is highly protein bound. It has volume of distribution that is limited. This causes the diuretics to be secreted in the convuluted tubules  to exert its function.
6 0
3 years ago
The presence of which of the following characteristics differentiates prokaryotic and eukaryotic cells?
ipn [44]

Answer:

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.

Prokaryotic Cell

Unicellular

Lysosomes and Peroxisomes absent

Microtubules absent

Endoplasmic reticulum absent

eukaryotic Cell

Multicellular

Lysosomes and Peroxisomes present

Microtubules present

Endoplasmic reticulum present

8 0
3 years ago
Bone formation begins when ____________ secrete the initial semisolid organic form of bone matrix called ____________ .
butalik [34]

Answer:

a. osteoblasts

b. osteoid

Explanation:

Osteoblasts are the fundamental cell of bone tissue. They are the cells that synthesize the bone matrix called osteoid from which it is made from the skeleton of bone fish, to the skeleton of humans. Since the bone skeleton is an evolutionary paraphiletic characteristic (it is present in several taxonomic groups that have evolved from the same ancestor).

Osteoblasts are responsible for the development and growth of bones during the juvenile stage of individuals and are also responsible for maintaining adult bone and regenerating bone when it breaks.

Osteogenesis is the process of differentiation of osteoblasts. The cells from which osteoblasts differ are called osteoprogenitors. The differentiation of osteoprogenitor cells, which come from the mesoderm, periosteum or bone marrow, is induced by growth factors called bone morphogenetic proteins (BMPs), capable of inducing the growth of bone, cartilage or connective tissue. When an osteoprogenitor cell receives a BMP signal, it quickly begins to express the genes to generate collagen, osteonectin and alkaline phosphatase, among other compounds necessary for bone growth. When the bone grows, it ends up wrapping some of the osteoblasts and they lose their ability to replicate, at that time they are dedicated to bone maintenance and not to their synthesis and are called osteocytes.

6 0
3 years ago
SOMEONE PLEAS HELP ITS AN EXAM I HAVE 5 MORE MINUTES
Allushta [10]

Answer:

False

Explanation:

All the bases are found in DNA not RNA

RNA is identified with thymine

7 0
3 years ago
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