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lyudmila [28]
3 years ago
12

The reproductive structures in angiosperms are found in the

Biology
1 answer:
sveta [45]3 years ago
7 0

Answer: c. Flower

Explanation:

An angiosperm can be define as a group of vascular plants. These plants are flower bearing which means they conduct sexual mode of reproduction through flowers. The flower exhibit male and female reproductive structures the fertilization of which produce seeds and fruits.

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Need help on checking my answers! The ones circled in yellow are the ones that I believe the answers are. Please and thank you
nirvana33 [79]

This is cyclic change because the population is consistently going up and back down.

8 0
3 years ago
A transparent specimen is viewed through a microscope using _____ light while an opaque object requires _____ illumination.
Julli [10]

Transmitted, vertical

A transparent specimen is viewed through a microscope using transmitted light while an opaque object requires vertical illumination.

Transmitted light is the light that passes through an object. Transmitted light microscopy is any kind of microscopy in which the light is transmitted from a source located directly across the specimen from the objective. The light is commonly passed through a condenser in order to focus it on the specimen to obtain very high illumination. After the light passes through the specimen, the image of the specimen moves through the objective lens and later to the oculars where the enlarged image is viewed.


6 0
3 years ago
Read 2 more answers
21. Describe the three steps by which a population<br> of insects becomes resistant to a pesticide.
Tresset [83]

Answer:

1. Survivors of the pesticide have a gene that protects them from it.

2. Then the survivors pass on the gene to their offspring,

3. Each time the pesticide is sprayed, the insects have a greater chance of survival.

6 0
3 years ago
What's your philosophy in life?
Inga [223]

Answer:

My philosophy in life is to learn something everyday, to take care of my physical and mental health, and to enjoy life serving God.

8 0
3 years ago
What are the two different results of a lack of calcium and a lack of atp?
liq [111]
<span>There are numerous proteins in muscle. The main two are thin actin filaments and thick myosin filaments. Thin filaments form a scaffold that thick filaments crawl up. There are many regulatory proteins such as troponin I, troponin C, and tropomyosin. There are also proteins that stabilize the cells and anchor the filaments to other cellular structures. A prime example of this is dystrophin. This protein is thought to stabilize the cell membrane during contraction and prevent it from breaking. Those who lack completely lack dystrophin have a disorder known as Duchene muscular dystrophy. This disease is characterized by muscle wasting begininng in at a young age and usually results in death by the mid 20s. The sarcomere is the repeating unit of skeletal muscle. 

Muscle cells contract by interactions of myosin heads on thick filament with actin monomers on thin filament. The myosin heads bind tightly to actin monomers until ATP binds to the myosin. This causes the release of the myosin head, which subsequently swings foward and associates with an actin monomer further up the thin filament. Hydrolysis and of ATP and the release of ADP and a phosphate allows the mysosin head to pull the thick filament up the thin filament. There are roughly 500 myosin heads on each thick filament and when they repeatedly move up the thin filament, the muscle contracts. There are many regulatory proteins of this contraction. For example, troponin I, troponin C, and tropomyosin form a regulatory switch that blocks myosin heads from binding to actin monomers until a nerve impulse stimulates an influx of calcium. This causes the switch to allow the myosin to bind to the actin and allows the muscle to contract. </span><span>
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6 0
3 years ago
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