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natali 33 [55]
2 years ago
5

3. what Unicellular organisms that lack nuclei. *

Biology
1 answer:
mel-nik [20]2 years ago
8 0

Answer:

prokaryotes (for ex. bacteria)

Explanation:

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A mutation near the middle of a gene changes the DNA to the following nucleotides: ATT. What
True [87]

Answer:

A mutation near the middle of a gene changes the DNA to the following nucleotides: ATT. What  kind of mutation occurred in this situation?

missense mutation

Explanation:

3 0
3 years ago
Imagine that a toxin is introduced to the body and inhibits the establishment of the proton gradient in the intermembrane space.
jarptica [38.1K]

Answer:

ATP synthase would be unable to produce ATP

Explanation:

ATP synthase depends on the proton gradient in the intermembrane space to enable it to produce ATP. As a consequence of this, the toxin will make it inactive. Oxidative phosphorylation is now inhibited in this case, as opposed to substrate-level phosphorylation.

Pyruvate is a product of glycolysis, and it will not be affected by a toxin. NADH is very important in the establishing of a proton gradient, so it is expected that it would be unable to be oxidized due to the toxin. Protons produced in the conversion of NADH to NAD+ actually establish the proton gradient. If the gradient is absent, NADH is then not likely to be oxidized.

3 0
3 years ago
A person you are helping is awake and alert but is complaining of a severe headache, pain in their abdomen and nausea. you obser
Zinaida [17]
There are choices for this question namely:

a. What is your name and where do you live?
b. How much poison did you swallow?
c. How long have you been feeling this way?
<span>d. What have you recently had to eat or drink?
</span>
The correct answer is "what have you recently had to eat or drink". This will confirm the suspicion by first ruling out potential reactive foods or drinks that may have caused a similar reaction (i.e. allergic reactions). If that is ruled out, then the probing about the history of intake of poison will come next in the interview. 
6 0
3 years ago
How do plants obtain carbon atoms?
aalyn [17]
C. From carbon dioxide in the atmosphere
5 0
3 years ago
Read 2 more answers
Viral genomes may comprise Choose one: A. double-stranded RNA. B. double-stranded DNA. C. double or single-stranded DNA or doubl
wlad13 [49]

Answer:

The correct answer is- C. double or single-stranded DNA or double or single-stranded RNA.

Explanation:

All the viruses are intracellular parasites which means they obtain their nutrition from their host. Viruses do not have cellular level of organization. They only have their nucleic acid which is surrounded by a protein coat called a capsid.

The nucleic acid in viruses can be of different types. It can be single or double-stranded DNA or single or double-stranded RNA. Their genome can be linear or circular. They inject their genetic material in their host and introduce it in the host genome. Therefore the correct answer is C.

6 0
3 years ago
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